A modern-day superhero saga, Dark Sector is a third-person shooter where players assume the role of the protagonist, Hayden Tenno who gains the ability to morph into dramatically different combat forms. Set in the crumbling infrastructure of a fictional Soviet-bloc country in the near future, the game features both single and multi-player action, with players working their way through a world where bio-weapons are no longer science experiments, but a hellish nightmare let loose on an unsuspecting populace.